267 citations · 2.1k across the 89 of their papers we have counts for
12 papers · 1 filter
Dynamical evolution of clusters of galaxies: the effect of high- velocity substructure clumps
A. Del Popolo, M. Gambera, E. N. Ercan
In the Cold Dark Matter (hereafter CDM) scenario even isolated density peaks contain a high fraction of small scale clumps having velocities larger than the average escape velocity…
Ellipsoidal collapse and previrialization
A. Del Popolo, N. E. Ercan, Z. Xia
We study the non-linear evolution of a dust ellipsoid,embedded in a Friedmann flat background universe, in order to determine the evolution of the density of the ellipsoid as the p…
Numerical Performance of Abs Codes for Nonlinear Systems of Equations
E. Bodon, A. Del Popolo, L. Luksan +1
Numerical experiments are performed in order to study the performance of ABS codes in solving non-linear systems of equations.
About Some Regge-Like Relations for (stable) Black Holes
E. Recami, V. Tonin-Zanchin, A. Del Popolo +1
We associated, in a classical formulation of "strong gravity", hadron constituents with suitable stationary, axisymmetric solutions of some new Einstein-type equations supposed to…
The strong coupling constant
Erasmo Recami, Tonin-Zanchin, Antonino Del Popolo +1
In this paper we fix our attention, on hadron structure, and show that also the strong interaction strength alpha_S, ordinarily called the "(perturbative) coupling--constant square…
An ABS Algorithm for a Class of Systems of Stochastic Linear Equations
Hai-Shan Han, Zun-Quan Xia, Antonino Del Popolo
This paper is to explore a model of the ABS Algorithms for dealing with a class of systems of linear stochastic equations A xi=eta satisfying eta sim N_m(v, I_{m}). It is shown tha…
C++ Codes of Implicit Lu Algorithms for Absdll01
Xing Li, Ying Liu, Antonino Del Popolo
This report is devoted to some C++ codes implementing the implicit LU class algorithms for solving linear determined, and undetermined systems with variables and equations.…
Computational Experiments with Abs Algorithms for KKT Linear Systems
E. Bodon, A. Del Popolo, L. Luksan +1
The results of computational experiments with ABS algorithms for KKT linear systems are reported.
Computational Experiments with Abs Algorithms for Overdetermined Linear Systems
E. Bodon, A. Del Popolo, L. Luksan +1
The results of computational experiments with ABS algorithms for overdetermined linear systems are reported.
ABS Algorithms for Linear Systems and Optimization
Emilio Spedicato, Elena Bodon, Antonino Del Popolo +1
We present a review and bibliography of the main results obtained during a research on ABS (Abaffy, Broyden, Spedicato) methods.
The pair-wise velocity dispersion of galaxies: effects of non radial motions
A. Del Popolo
I discuss the effect of non-radial motions on the small-scale pairwise peculiar velocity dispersions of galaxies (PVD) in a CDM model. I calculate the PVD for the SCDM model by mea…
Migration of giant planets in planetesimal discs
A. Del Popolo, M. Gambera, E. Nihal Ercan
Planets orbiting a planetesimal circumstellar disc can migrate inward from their initial positions because of dynamical friction between planets and planetesimals. The migration ra…